Write directly on these cards with pencil or permanent marker during any weather. Markings stay put no matter the conditions until you erase or clean with alcohol wipe (required for permanent marker). The factory markings never wash away or fade. Save time and stay focused on the field of play, not your notes! These durable, long-lasting, write-on cards eliminate the need for a booklet or even paper. When a situation occurs, write directly on the card without the need to open a booklet and/or straighten some paper that might be getting wet. The cards allow you to keep more attention on the game, and have less hassle with your notations. *Coordinators and assignors! Want to provide cards for an officials' association or tournament? We specialize in customized card sets for special groups and provide a discount!